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N. F. MATHEWSON.

BUTTON 0R STUD.

No. 311,194. Patented Jan. 27,1885.

N, PETERS. Pfmloiilhogmphan Washington. D C.

UNrTnn STATES ATENT Prion.

NATHAN F. MATHEWSON, OF PROVIDENCE, RHODE'ISLAND. I

BUTTON OR STUD.

SPECIFICATION forming part of Letters Patent No. 311,194,:1ated January27, 1885. Application filed November 7, 1884. (No model.)

To aZZ whom it 11101, concern:

have made certain new and useful Improvements in Buttons or Studs; and Ido hereby declare that the following specification,taken in connectionwith the drawings making a part of the same,is a full, clear, and exactdescription thereof.

Figure 1 is a vertical section of my improved button. Fig. 2 is avertical section at right angles to Fig. 1, showing position of partswhen button is adjusted to the cuffs. Fig. 3 is a vertical sectionshowing position of parts with button ready for insertion. Fig. 4 is atop and side view of the bottom plate or disk. Fig. 5 is a perspective xiew of the spring. Fig. 6 shows device for operating the spring.Fig-61lshows back of button,with locking-levers closed. Fig. 7 is avertical section, as in Fig. 2, showing a change of device for operatingthe spring. Fig. 8 is a vertical section of same, showing levers open.Fig. 9 is a top view of back plate and spring,with change de vice foroperating the latter.

The object of my invention is to produce a button or stud which may beeasily inserted in and withdrawn from the cuff, and at the same time soconstructed that it will not be likely to get out of repair; and itconsists in the construction and arrangement of the levers and thedevices for securing, releasing, and operating the same, as hereinafter"described.

In the drawings, A is the'outer rim'or shell of the button, having aninterior annular rim, B, to support the setting.

0 is the back plate or disk, (more clearly shown in Fig. 4,) having twocentral rectangular slots, at a, and having also upon its exteriorsurface two perpendicular posts, 0 c, be tween the bases of which,covering the space between the slots a a, is a wedge, d.

D D are elbow-levers notched at one end, and having their fulcrums upona rod connecting the free ends of the posts 0 c.

E, Fig. 5, is a spring which is placed upon the plate 0 within thebutton, and is confined at either end by the annular rim B,which mayextend downward within the shell A, or,with a straighter spring,may besimply a flat piece. The spring E is provided with four prongs, e e,which, when the spring is adjusted, pass through the slots a a, two uponeach side of the wedge d and in contact therewith, only extending,however, to the foot of the bevel upon the same.

F, Fig. 6, is an arbor whi h extends across the button, passing underthe spring E, as shown in Figs. 1, 2, and 3, and having attached theretonear the center a lug, f, and'at one end upon the outside of the shell alevelgG.

Commencing with the parts in the position shown in Fig. 3, the operationof my invention is as follows: Thelong arms of the elbowlevcrs D D areinserted in the button-hole and forced through the same until the shortarms come in contact with the fabric upon'either side, when thecontinued pressure upon the button will cause the levers to work upontheir fulcrums, the short arms moving backward and the long armsspreading out upon the opposite or inside of the cuff. This movement ofthe levers continues until the long arms reach a horizontal position, asshown in Figs. 2 and and the notches in the short arms engage with thewedge d. Before the notched arms can be seated upon the wedge 01 thelong point of the notch comes in contact with and forces back the prongse e, overcoming the resistance of the spring E, to which they areattached or form a part. As soon, however, as the notched arm of thelever has fully reached its seat the long point of the notches will havecleared their respective prongs,when the latter,through the release ofthe spring, will resume their former position and overlap the seatedpoint of the levers and lock them in a manner well understood.

When it is desired to remove the button,the top is seized with the thumband fingers, the forefinger raising the lever G to the position shown inFig. 3. The raising of the lever G turns the arbor F and raises thespring E through the action of the lug f, as will be readily understood.As the spring E is thus raised, so are the prongs e 0, attached thereto,until the short arms of the lever become free, when the continued pullwill cause the levers to work upon their fulcrulns back to the positionshown in Fig. 3, and the button to be removed from the button-hole.

In Figs. 7, 8, and 9 another method of raising the spring E is shown,which consists of a furcated wedge, H,which is forced under the springby the action of the thumb upon the push-bar I, a spiral spring, J,being used to throw back the wedge and release the spring.

As the spiral spring is required to be of considerable strength, it islikely to get out of order, and I do not therefore consider it the bestdevice. The spiral spring may, however, be removed and a vertical slotmade in the side of the shell A, which Will permit the wedge H to beused as a lever to raise the spring by the action of the thumb upon theprotruding bar I.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The plate 0, having posts a. c and wedge (Z, for supporting andseating the elbow-levers D D, in combination with said clbowlevers D Dand spring E, the whole constructed and operating substantially asdescribed.

2. The lever operated spring E, having prongs e c, in combination withthe plate 0 and elbow-levers D D, for locking and releasing said leversD D, in the manner and for the purposes substantially as described.

3. The combination of the pronged leveroperated spring E, plate 0, asdescribed, and clbow-levers D D, the Whole constructed and ope 'atingsubstantially as specified,

4. The combination of the plate 0, lugged raising-lever I and prongedspring E, the whole arranged and operating substantially as described.

5. The combination of the shell A, annular rim B, pronged spring E,raising-lever F, plate 0, and suitably-supported elbow-levers D D, thewhole arranged and operating together substantially as described.-

N. F. MATHEWSON.

Witnesses:

WALTER I VINCENT, JAMES D. OHERN.

